What can increase the variation of genetic traits in a population?
A) Mutations
B) Adaptations
C) Natural selection
D) All of these choices
A
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The United States recently restored diplomatic relations with
A) Jamaica B) Puerto Rico C) Haiti D) Virgin Islands E) Cuba
A collection of rural households linked by custom, culture, or family is known as a(n)
A. Urban area B. Megacity C. Rural village D. Urban farm E. City
The wavelength of incoming radiation compared to outgoing radiation is:
A) incoming has a longer wavelength than outgoing. B) incoming has a shorter wavelength than outgoing. C) the wavelength is equal between the two. D) outgoing has shorter wavelength than incoming.
The total number of living species is probably
A. Between 500,000 and 1 million B. About 450,000 C. At least 300 million D. Between 3 million and 50 million E. Between 75 and 95 million